85255784 has 32 divisors (see below), whose sum is σ = 162081000. Its totient is φ = 42039552.

The previous prime is 85255783. The next prime is 85255811. The reversal of 85255784 is 48755258.

It can be written as a sum of positive squares in 4 ways, for example, as 83210884 + 2044900 = 9122^2 + 1430^2 .

It is not an unprimeable number, because it can be changed into a prime (85255783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316802 + ... + 317070.

Almost surely, 2^85255784 is an apocalyptic number.

It is an amenable number.

85255784 is a deficient number, since it is larger than the sum of its proper divisors (76825216).

85255784 is a wasteful number, since it uses less digits than its factorization.

85255784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 673 counting only the distinct ones).

The product of its digits is 448000, while the sum is 44.

The square root of 85255784 is about 9233.4058721579. The cubic root of 85255784 is about 440.1235603400.

The spelling of 85255784 in words is "eighty-five million, two hundred fifty-five thousand, seven hundred eighty-four".